EP0997417B1 - Method and device for severing a running web - Google Patents

Method and device for severing a running web Download PDF

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Publication number
EP0997417B1
EP0997417B1 EP99114472A EP99114472A EP0997417B1 EP 0997417 B1 EP0997417 B1 EP 0997417B1 EP 99114472 A EP99114472 A EP 99114472A EP 99114472 A EP99114472 A EP 99114472A EP 0997417 B1 EP0997417 B1 EP 0997417B1
Authority
EP
European Patent Office
Prior art keywords
web
cutting device
core
cutting
winding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP99114472A
Other languages
German (de)
French (fr)
Other versions
EP0997417A1 (en
Inventor
Zygmunt Madrzak
Walter Kaipf
Roland Möller
Matthias Wohlfahrt
Jörg Dr. Maurer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Voith Patent GmbH
Original Assignee
Voith Paper Patent GmbH
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Filing date
Publication date
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Publication of EP0997417A1 publication Critical patent/EP0997417A1/en
Application granted granted Critical
Publication of EP0997417B1 publication Critical patent/EP0997417B1/en
Anticipated expiration legal-status Critical
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H19/00—Changing the web roll
    • B65H19/22—Changing the web roll in winding mechanisms or in connection with winding operations
    • B65H19/2238—The web roll being driven by a winding mechanism of the nip or tangential drive type
    • B65H19/2253—The web roll being driven by a winding mechanism of the nip or tangential drive type and the roll being displaced during the winding operation
    • B65H19/2261—Pope-roller
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/04—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member
    • B26D1/045—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member for thin material, e.g. for sheets, strips or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/04—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member
    • B26D1/06—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates
    • B26D1/10—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates in, or substantially in, a direction parallel to the cutting edge
    • B26D1/105—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates in, or substantially in, a direction parallel to the cutting edge for thin material, e.g. for sheets, strips or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/04—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member
    • B26D1/06—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates
    • B26D1/10—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates in, or substantially in, a direction parallel to the cutting edge
    • B26D1/11—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates in, or substantially in, a direction parallel to the cutting edge with a plurality of cutting members
    • B26D1/115—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates in, or substantially in, a direction parallel to the cutting edge with a plurality of cutting members for thin material, e.g. for sheets, strips or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/02—Means for moving the cutting member into its operative position for cutting
    • B26D5/04—Means for moving the cutting member into its operative position for cutting by fluid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H19/00—Changing the web roll
    • B65H19/22—Changing the web roll in winding mechanisms or in connection with winding operations
    • B65H19/26—Cutting-off the web running to the wound web roll
    • B65H19/265—Cutting-off the web running to the wound web roll using a cutting member moving linearly in a plane parallel to the surface of the web and along a direction crossing the web
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/41—Winding, unwinding
    • B65H2301/417—Handling or changing web rolls
    • B65H2301/4187—Relative movement of core or web roll in respect of mandrel
    • B65H2301/4189—Cutting
    • B65H2301/41898—Cutting threading tail and leading it to new core
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/50—Auxiliary process performed during handling process
    • B65H2301/51—Modifying a characteristic of handled material
    • B65H2301/515—Cutting handled material
    • B65H2301/5151—Cutting handled material transversally to feeding direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/50—Auxiliary process performed during handling process
    • B65H2301/51—Modifying a characteristic of handled material
    • B65H2301/515—Cutting handled material
    • B65H2301/5153—Details of cutting means
    • B65H2301/51534—Water jet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/50—Auxiliary process performed during handling process
    • B65H2301/51—Modifying a characteristic of handled material
    • B65H2301/515—Cutting handled material
    • B65H2301/5153—Details of cutting means
    • B65H2301/51536—Laser
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2408/00—Specific machines
    • B65H2408/20—Specific machines for handling web(s)
    • B65H2408/23—Winding machines
    • B65H2408/236—Pope-winders with first winding on an arc of circle and secondary winding along rails
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2408/00—Specific machines
    • B65H2408/20—Specific machines for handling web(s)
    • B65H2408/23—Winding machines
    • B65H2408/2362—Winding machines with two secondary winding spools, e.g. on separate carriages
    • B65H2408/2364—Winding machines with two secondary winding spools, e.g. on separate carriages with additional element for facilitating web roll change
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/84—Paper-making machines

Definitions

  • the invention relates to a method for cutting a running Material web, in particular a paper web, in which the material web successively wound on several winding cores, in particular reels and each started with winding on a new winding core when one is formed on a previous old winding core Has reached a predetermined diameter, the new winding core between a winding roller, in particular a support roller, and the old winding core, to which the material web is fed via the winding roller is brought and the running material web in the area between a gap from the winding roller and the new winding core is formed, and the winding roll formed on the old winding core is severed, according to the preamble of claim 1.
  • the invention also relates to a device for carrying out a such a method with at least one cutting device, according to the preamble of claim 19.
  • Such separation methods and devices are for example in the Papermaking applied to the finished paper web without interruption the manufacturing process, i.e. without switching off the paper machine, one after the other on several winding cores, which are also called reels be referred to wind up.
  • DE 2 721 883 A describes in a device for Transfer of a paper web two by means of a rope outwardly movable, oblique cutting lines generating knife, whereby to completely cut the Paper web an additional cutting device is provided.
  • this object is achieved with the characteristics of the characterizing Part of the Claim 1 solved in that the material web by means of at least one cutting device which is in a material web approximately parallel plane is moved relative to the material web, is completely severed.
  • the Cutting device with an at least approximately constant speed at least substantially perpendicular to the direction of the Material web moves.
  • a cutting line can be generated in the material web at an angle to the running direction of the material web from an edge of the material web runs to the opposite edge.
  • the generated by it The sloping edge of the new web start can also be used at very high web speeds comparatively easy on the new winding core be wound up. This creates a conically wound start of winding.
  • two cutters in opposite directions at least approximately perpendicular to the direction of travel of the material web moved with preferably at least approximately constant speed.
  • the two cutting devices can - with respect to the transverse direction - in this way on the material web in the region of its center or from the edges of which are set so that two intersecting, each diagonally to the running direction of the material web from about the middle to one the edges or reverse cut lines are created.
  • the leading edge of the new path start can be cut to a point be made, which makes winding on the new winding core easier becomes.
  • a paper web 10 is over a winding roller 18th a winding core 14, hereinafter referred to as the old winding core is supplied, on which, in the state according to FIG. 1, a winding roll already 16 has been formed.
  • the paper web 10 runs through a gap 21 between the winding roller 16 and a pressure roller 32.
  • the axes of rotation of the winding roller 18 and the old winding core 14 lie in the same horizontal plane in which the old winding core 14 load-bearing winding carriage 44, which is outside of the axis of rotation of the Winding roller 18 and the old winding core 14 is in one direction is movable perpendicular to the axes of rotation.
  • Fig. 1 shows the winding device in a state in which the desired Final diameter of the winding roll 16 reached and the old winding core 14 from a winding position adjacent to the winding roller 18 in FIG. 1 has moved to the right.
  • a new winding core 12 on which the paper web 10 is further wound 1 the winding roller 18 is in a position according to FIG driven in which the axes of rotation of the new winding core 12 and the Winding roller 18 perpendicular cutting line at an angle ⁇ of about 30 ° to the horizontal.
  • the new winding core 12 and the winding roller 18 form a gap 20 for the paper web 10.
  • a cutting device is near the new winding core 12 in the direction of web travel behind the gap 20 between the winding roller 18 and the new one Winding core 12, i.e. in the area between the gap 20 and the on the old winding core 14 formed winding roll 16 positioned.
  • the cutting device comprises a knife 24 which is connected to a transport device 36 is coupled, which is attached to a carrier 38.
  • the Carrier 38 is together with the knife 24 and the transport device 36 by means of an actuator 34 between a solid in Fig. 1 Lines shown separating position and a dashed line Waiting position swiveling, as indicated by a double arrow is indicated in Fig. 1.
  • the transport device 36 for example comprises an endless member 40 designed as a chain, belt or band, to which the knife 24 is attached and which is perpendicular to the direction indicated by an arrow B, i.e. longitudinal of the new winding core 12 extends, the direction of rotation by a Arrow C is indicated.
  • the endless member 40 is tensioned by two deflection rollers 42.
  • One of the Deflection rollers 42 is coupled to a drive device, not shown, let it circulate around the endless member 40 and thus the knife 24 to be able to.
  • FIG. 1 To with the winding device according to the invention shown in FIGS. 1 and 2 wind the paper web 10 onto the new winding core 12, the state shown in FIG. 1 is first established. This will be the new one Winding core 12 between the winding roller 18 and that of the winding roller 18 brought old winding core 14 brought.
  • the carrier 38 is pivoted into the disconnected position according to FIG. 1, wherein the knife 24 in the rest position shown in dashed lines in FIG. 2 on the side of the endless member 40 facing away from the paper web 10 located.
  • a cutting line is formed which runs obliquely to the web running direction B. 46, the angle that the cutting line 46 with the web running direction B includes the ratio of the speeds of the knife 24 and the paper web 10 depends.
  • Paper web 10 cut at an angle to web running direction B is then if necessary with the help of suitable means on the new winding core 12 wound.
  • the new path start 10a can do this for example, blown onto the new winding core 12 by means of compressed air become. Due to the severing of the paper web 10 behind the gap 20 is the new winding core 12 in the arrangement according to FIGS. 1 and 2 at the end of the separation process, in some areas, from the new start of the path 10a wrapped around, causing the new web start to wind up 10a on the new winding core 12 is facilitated.
  • the cutting device can also be used with another Cutting tool may be provided, for example with a nozzle for Ejecting a jet of water under high pressure, a laser or a rotating toothed cutting wheel.
  • the Cutting device can also be moved obliquely to the web running direction B, whereby - with unchanged speed of the paper web 10 and the Knife 24 - the angle between the cutting line 46 and the web running direction B smaller, i.e. the paper web 10 is cut more pointedly.
  • the winding device in the embodiment according to FIG. 3 differs differs from the embodiment described above with reference to FIGS. 1 and 2 in that the new one for severing the paper web 10 Winding core 12 further into the space between winding roll 16 and the winding roller 18 is moved in such a way that the axes of rotation of the Winding cores 12, 14 and the winding roller 18 in the same horizontal Level.
  • the new one Winding core 12 thus dipped deeper into the paper web 10, the Paper web 10 the new winding core 12 over an angular range of almost wraps around 90 °.
  • the cutting device instead of a rotating knife, the cutting device with a revolving nozzle 26 provided, through which a water jet under high Pressure can be ejected in the direction of the new winding core 12, which is able to cut the paper web 10.
  • the nozzle 26 is aligned so that such a water jet approximately in radial Direction towards the new winding core 12 is aimed.
  • the cutting device can also be done by other means be provided for severing the paper web 10, e.g. B. with a laser device.
  • the winding cores 12, 14 are preferably of an elastically deformable type Cover made of polyurethane or another wear-resistant plastic Mistake.
  • the winding roller 18 can be compliant Have reference, while the winding cores 12, 14 with a metal manufactured cover are provided.
  • the cutting device comprises two knives 24 ' in each case perpendicular to the web running direction indicated by the arrow B in FIG. 5 are movable in opposite directions.
  • the transport device 36 'not shown in detail in FIG. 5 comprises an endless organ, as explained in connection with FIGS. 1 and 2 has been and on which the two knives 24 'are attached.
  • the knives 24 'can also each start from one of the edges of the Paper web 10 perpendicular to the web running direction B in the direction of the center the paper web 10 are in turn moved such that the cutting lines to cut. This would look like a V or dovetail incised new start of path.
  • the embodiment of the winding device according to the invention 6 and 7 differs from the embodiment according to Fig. 1 in that the knife 24 "comprising transport device 36 "comprises a cylinder-piston unit 28.
  • the knife 24" is with a Cylinder coupled in a perpendicular to the web running direction B in a piston extending parallel to the paper web 10 can be moved back and forth.
  • every combination is between the specific design the cutting device and the arrangement of the new winding core 12 with respect to the old winding core 14 and the winding roller 18 possible.
  • the transport device of the cutting device can also be one a linear guide include positively guided carriage, which at the beginning of the separation process accelerated impulsively and across the full width of the Paper web is shot to a certain extent.
  • the transport device 36, 36 ', 36' 'of the cutting device and the Actuator 34 can with the new winding core 12 - z. B. about elements carried by means of the new winding core 12 - coupled in this way be that the cutting device when swiveling the new Winding core 12 to the winding roller 18 - regardless of the position of the new winding core 12 - always in an optimal position for Cutting the paper web 10 is located.
  • An advantage of the invention is that the pivoting movement of the new winding core 12 to the winding roller 18 for cutting the paper web 10 does not have to be interrupted.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Replacement Of Web Rolls (AREA)
  • Nonmetal Cutting Devices (AREA)
  • Details Of Cutting Devices (AREA)
  • Control Of Cutting Processes (AREA)

Abstract

Cutting a continuous moving material sheet involves using a cutting unit which is movable relative to the material sheet in a plane substantially parallel to the material sheet. The moving material sheet (10) is cut through completely by means of at least one cutter unit which moves relative to the material sheet in a plane substantially parallel to the material sheet. An independent claim is also included for an apparatus for implementation of the above method, in which the cutter unit of the apparatus is movable relative to the material sheet in a plane substantially parallel to the material sheet.

Description

Die Erfindung betrifft ein Verfahren zum Durchtrennen einer laufenden Materialbahn, insbesondere einer Papierbahn, bei dem die Materialbahn nacheinander auf mehrere Wickelkerne, insbesondere Tamboure, aufgewickelt und jeweils mit dem Aufwickeln auf einen neuen Wickelkern begonnen wird, wenn eine auf einem vorherigen alten Wickelkern gebildete Wickelrolle einen vorbestimmten Durchmesser erreicht hat, wobei der neue Wickelkern zwischen eine Wickelwalze, insbesondere eine Tragwalze, und den alten Wickelkern, dem die Materialbahn über die Wickelwalze zugeführt wird, gebracht und die laufende Materialbahn in dem Bereich zwischen einem Spalt, der von der Wickelwalze und dem neuen Wickelkern gebildet wird, und der auf dem alten Wickelkern gebildeten Wickelrolle durchtrennt wird, gemäß den Oberbegriff des Anspruchs 1.The invention relates to a method for cutting a running Material web, in particular a paper web, in which the material web successively wound on several winding cores, in particular reels and each started with winding on a new winding core when one is formed on a previous old winding core Has reached a predetermined diameter, the new winding core between a winding roller, in particular a support roller, and the old winding core, to which the material web is fed via the winding roller is brought and the running material web in the area between a gap from the winding roller and the new winding core is formed, and the winding roll formed on the old winding core is severed, according to the preamble of claim 1.

Die Erfindung betrifft außerdem eine Vorrichtung zur Durchführung eines derartigen Verfahrens mit wenigstens einer Schneidvorrichtung, gemäß dem Oberbegriff des Anspruchs 19.The invention also relates to a device for carrying out a such a method with at least one cutting device, according to the preamble of claim 19.

Derartige Trennverfahren und -vorrichtungen werden beispielsweise in der Papierherstellung angewendet, um die fertige Papierbahnohne Unterbrechung des Herstellungsprozesses, d.h. ohne Abschalten der Papiermaschine, nacheinander auf mehrere Wickelkerne, die auch als Tamboure bezeichnet werden, aufzuwickeln. Such separation methods and devices are for example in the Papermaking applied to the finished paper web without interruption the manufacturing process, i.e. without switching off the paper machine, one after the other on several winding cores, which are also called reels be referred to wind up.

Dabei muß dafür gesorgt werden, daß der durch das Durchtrennen der Materialbahn entstehende neue Bahnanfang dem neuen Wickelkern zugeführt wird, um auf diesem eine neue Wickelrolle zu bilden.It must be ensured that the by cutting the The new beginning of the material is fed to the new winding core to form a new winding roll on this.

Aus der WO 97/48632, der US 5,360,179 sowie der EP 0 658 504 B1 ist es jeweils bekannt, die Papierbahn vor dem Wickelspalt zwischen der Wikkelwalze und dem neuen Wickelkern zu durchtrennen und dazu beispielsweise mit schräg zur Bahnlaufrichtung verlaufenden oder gekrümmten Schnittlinien zu versehen. Bei dem Durchtrennen der Papierbahn vor dem Wickelspalt besteht die Gefahr, daß der neue Bahnanfang zurückspringt und nicht in den Wickelspalt geführt werden kann.From WO 97/48632, US 5,360,179 and EP 0 658 504 B1 it is known the paper web in front of the winding nip between the winding roller and to cut the new winding core and for example with curved or oblique to the web running direction To provide cutting lines. When cutting the paper web before the Winding gap there is a risk that the new start of the web will spring back and cannot be fed into the winding gap.

Es ist des weiteren bekannt, mittels einer schwenkbaren maschinenbreiten Trennvorrichtung zwischen dem neuen und dem alten Wickelkern, d.h. hinter dem Wickelspalt, in die Papierbahn zu schlagen. Die dabei entstehende, senkrecht zur Bahnlaufrichtung verlaufende Schnittkante kann zu Problemen beim Aufwickeln des neuen Bahnanfangs auf dem neuen Wickelkern führen.It is also known by means of a swiveling machine width Separating device between the new and the old winding core, i.e. behind the winding nip to punch in the paper web. The resulting Cutting edge running perpendicular to the web running direction can problems with winding the new start of the web on the new one Guide the winding core.

Aus der EP 0 658 504 B1 ist es ebenfalls bekannt, die Materialbahn hinter dem Wickelspalt zwischen der Wickelwalze und dem neuen Wickelkern zu durchtrennen, wobei nicht erwähnt ist, in welcher Weise dies erfolgt.It is also known from EP 0 658 504 B1 that the material web is behind the winding gap between the winding roller and the new winding core cut through, but it is not mentioned how this is done.

Aus der DE 44 01 804 A1 ist es bekannt, in den Weg einer Papierbahn eine Trennvorrichtung hinein zu bewegen, die ein streckenweise traversierendes Messer als Trenngerät umfaßt. Des weiteren ist es aus dieser Druckschrift bekannt, die Papierbahn mittels eines Messers nur an einer Stelle zu schwächen und anschließend mittels Druckluft restlos zu durchtrennen. Bei dem nur streckenweise traversierenden Messer und dem die Papierbahn lediglich schwächenden Messer besteht jeweils die Gefahr des unkontrollierten Einreißens der Papierbahn.From DE 44 01 804 A1 it is known to insert a into the path of a paper web Moving separator into it, which is a traversing in places Knife includes as a separator. Furthermore, it is from this Publication known, the paper web by means of a knife only on one To weaken point and then completely by means of compressed air cut. With the knife and the only weakening of the paper web is the Danger of uncontrolled tearing of the paper web.

DE 2 721 883 A beschreibt in einer Vorrichtung zur Übertragung einer Papierbahn zwei mittles eines Seils nach außen bewegbare, schtäge Schnittlinien erzeugende messer, wobei zum vollständigen Durchtrennen der Papierbahn eine zusätzliche Schneideinrichtung vorgesehen ist.DE 2 721 883 A describes in a device for Transfer of a paper web two by means of a rope outwardly movable, oblique cutting lines generating knife, whereby to completely cut the Paper web an additional cutting device is provided.

Es ist eine Aufgabe der Erfindung, ein Verfahren sowie eine Vorrichtung der eingangs genannten Art zu schaffen, die ein optimales Aufwickeln des neuen Bahnanfangs auf dem neuen Wickelkern ermöglichen.It is an object of the invention, a method and an apparatus of the type mentioned to create an optimal winding of the enable new web start on the new winding core.

Erfindungsgemäß wird diese Aufgabe mit den Merkmalen des Kennzeichnenden Teils des Anspruchs 1 dadurch gelöst, daß die Materialbahn mittels wenigstens einer Schneidvorrichtung, die in einer zur Materialbahn etwa parallelen Ebene relativ zur Materialbahn bewegt wird, vollständig durchtrennt wird.According to the invention, this object is achieved with the characteristics of the characterizing Part of the Claim 1 solved in that the material web by means of at least one cutting device which is in a material web approximately parallel plane is moved relative to the material web, is completely severed.

Durch das erfindungsgemäße vollständige Durchtrennen der Materialbahn wird ein undefiniertes Einreißen der Materialbahn verhindert, so daß die führende Kante des neuen Bahnanfangs stets die gleiche, vorgebbare Form besitzt und somit in definierter Weise an den neuen Wickelkern herangeführt werden kann. Des weiteren ist eine Beaufschlagung mit Druckluft zum vollständigen Durchtrennen der Materialbahn entbehrlich.Through the complete severing of the material web according to the invention Undefined tearing of the material web is prevented, so that the leading edge of the new path start always the same, definable Has shape and thus introduced to the new winding core in a defined manner can be. Furthermore, it is pressurized with compressed air not necessary to completely cut through the material web.

Gemäß einer bevorzugten Ausführungsform der Erfindung wird die Schneidvorrichtung mit einer zumindest näherungsweise konstanten Geschwindigkeit zumindest im wesentlichen senkrecht zur Laufrichtung der Materialbahn bewegt.According to a preferred embodiment of the invention, the Cutting device with an at least approximately constant speed at least substantially perpendicular to the direction of the Material web moves.

Hierdurch kann in der Materialbahn eine Schnittlinie erzeugt werden, die schräg zur Laufrichtung der Materialbahn von einem Rand der Materialbahn zu deren gegenüberliegendem Rand verläuft. Die dadurch erzeugte schräge Kante des neuen Bahnanfangs kann auch bei sehr hohen Bahngeschwindigkeiten vergleichsweise problemlos auf den neuen Wickelkern aufgewickelt werden. Hierbei entsteht ein konisch gewickelter Wickelanfang.As a result, a cutting line can be generated in the material web at an angle to the running direction of the material web from an edge of the material web runs to the opposite edge. The generated by it The sloping edge of the new web start can also be used at very high web speeds comparatively easy on the new winding core be wound up. This creates a conically wound start of winding.

Gemäß einer weiteren bevorzugten Ausführungsform der Erfindung werden zwei Schneidvorrichtungen in einander entgegengesetzten Richtungen zumindest näherungsweise senkrecht zur Laufrichtung der Materialbahn mit bevorzugt zumindest näherungsweise konstanter Geschwindigkeit bewegt.According to a further preferred embodiment of the invention two cutters in opposite directions at least approximately perpendicular to the direction of travel of the material web moved with preferably at least approximately constant speed.

Die beiden Schneidvorrichtungen können dabei - bezüglich der Querrichtung - derart an der Materialbahn im Bereich von deren Mitte oder von deren Rändern angesetzt werden, daß zwei sich schneidende, jeweils schräg zur Laufrichtung der Materialbahn etwa von deren Mitte zu einem der Ränder bzw. umgekehrt verlaufende Schnittlinien entstehen. Auf diese Weise kann die führende Kante des neuen Bahnanfangs spitz zugeschnitten werden, wodurch das Aufwickeln auf dem neuen Wickelkern erleichtert wird.The two cutting devices can - with respect to the transverse direction - in this way on the material web in the region of its center or from the edges of which are set so that two intersecting, each diagonally to the running direction of the material web from about the middle to one the edges or reverse cut lines are created. To this The leading edge of the new path start can be cut to a point be made, which makes winding on the new winding core easier becomes.

Die Lösung der Erfindung zugrunde liegenden Aufgabe erfolgt auferdem durch die kennzeichnenden Merkmale des Verfahrensanspruchs 10.The solution of the invention is based lying task is also done by the characteristic features of the process claim 10th

Die der Erfindung zugrundeliegende Aufgabe wird außerdem durch Vorrichtung zur Durchführung des erfindungsgemäßen Verfahrens mit den kennzeichnenden Merkmalen des Anspruchs 19 gelöst.The object underlying the invention is also achieved by Device for performing the method according to the invention solved with the characterizing features of claim 19.

Bevorzugte Ausführungsformen der Erfindung sind in den Unteransprüchen, der Beschreibung sowie den Zeichnungen angegeben. Preferred embodiments of the invention are in the subclaims, the description and the drawings.

Die Erfindung wird im folgenden beispielhaft unter Bezugnahme auf die Zeichnung beschrieben. Es zeigen:

Fig. 1
eine Seitenansicht einer Wickelvorrichtung gemäß einer Ausführungsform der Erfindung,
Fig. 2
einen Teil der Wickelvorrichtung von Fig. 1 in Richtung des Pfeils II gesehen,
Fig. 3
eine Wickelvorrichtung gemäß einer weiteren Ausführungsform der Erfindung,
Fig. 4
eine Wickelvorrichtung gemäß einer weiteren Ausführungsform der Erfindung,
Fig. 5
einen Teil der Wickelvorrichtung von Fig. 4 in Richtung des Pfeils V gesehen,
Fig. 6
eine Wickelvorrichtung gemäß einer weiteren Ausführungsform der Erfindung, und
Fig. 7
einen Teil der Wickelvorrichtung von Fig. 6 in Richtung des Pfeils VII gesehen.
The invention is described below by way of example with reference to the drawing. Show it:
Fig. 1
a side view of a winding device according to an embodiment of the invention,
Fig. 2
seen part of the winding device of Fig. 1 in the direction of arrow II,
Fig. 3
a winding device according to a further embodiment of the invention,
Fig. 4
a winding device according to a further embodiment of the invention,
Fig. 5
a part of the winding device of FIG. 4 seen in the direction of arrow V,
Fig. 6
a winding device according to a further embodiment of the invention, and
Fig. 7
seen a part of the winding device of Fig. 6 in the direction of arrow VII.

In der Wickelvorrichtung gemäß Fig. 1, die Bestandteil einer Maschine zur Papierherstellung ist, wird eine Papierbahn 10 über eine Wickelwalze 18 einem Wickelkern 14, der im folgenden als alter Wickelkern bezeichnet wird, zugeführt, auf dem in dem Zustand gemäß Fig. 1 bereits eine Wikkelrolle 16 gebildet worden ist. Die Papierbahn 10 läuft durch einen Spalt 21 zwischen der Wickelrolle 16 und einer Andrückwalze 32.1, which is part of a machine for Is paper production, a paper web 10 is over a winding roller 18th a winding core 14, hereinafter referred to as the old winding core is supplied, on which, in the state according to FIG. 1, a winding roll already 16 has been formed. The paper web 10 runs through a gap 21 between the winding roller 16 and a pressure roller 32.

Die Drehachsen der Wickelwalze 18 und des alten Wickelkerns 14 liegen in der gleichen horizontalen Ebene, in der ein den alten Wickelkern 14 tragender Wickelschlitten 44, der außerhalb der durch die Drehachsen der Wickelwalze 18 und des alten Wickelkerns 14 liegt, in einer Richtung senkrecht zu den Drehachsen verfahrbar ist.The axes of rotation of the winding roller 18 and the old winding core 14 lie in the same horizontal plane in which the old winding core 14 load-bearing winding carriage 44, which is outside of the axis of rotation of the Winding roller 18 and the old winding core 14 is in one direction is movable perpendicular to the axes of rotation.

Fig. 1 zeigt die Wickelvorrichtung in einem Zustand, in dem der gewünschte Enddurchmesser der Wickelrolle 16 erreicht und der alte Wikkelkern 14 aus einer Wickelposition benachbart der Wickelwalze 18 in Fig. 1 nach rechts gefahren ist.Fig. 1 shows the winding device in a state in which the desired Final diameter of the winding roll 16 reached and the old winding core 14 from a winding position adjacent to the winding roller 18 in FIG. 1 has moved to the right.

Ein neuer Wickelkern 12, auf den die Papierbahn 10 weiter aufgewickelt werden soll, ist gemäß Fig. 1 an die Wickelwalze 18 heran in eine Position gefahren, in der eine die Drehachsen des neuen Wickelkerns 12 und der Wickelwalze 18 senkrecht schneidende Linie unter einem Winkel α von etwa 30° zur Horizontalen verläuft. Der neue Wickelkern 12 und die Wickelwalze 18 bilden dabei einen Spalt 20 für die Papierbahn 10.A new winding core 12 on which the paper web 10 is further wound 1, the winding roller 18 is in a position according to FIG driven in which the axes of rotation of the new winding core 12 and the Winding roller 18 perpendicular cutting line at an angle α of about 30 ° to the horizontal. The new winding core 12 and the winding roller 18 form a gap 20 for the paper web 10.

Eine Schneidvorrichtung ist nahe dem neuen Wickelkern 12 in Bahnlaufrichtung hinter dem Spalt 20 zwischen der Wickelwalze 18 und dem neuen Wickelkern 12, d.h. in dem Bereich zwischen dem Spalt 20 und der auf dem alten Wickelkern 14 gebildeten Wickelrolle 16 positioniert.A cutting device is near the new winding core 12 in the direction of web travel behind the gap 20 between the winding roller 18 and the new one Winding core 12, i.e. in the area between the gap 20 and the on the old winding core 14 formed winding roll 16 positioned.

Die Schneidvorrichtung umfaßt ein Messer 24, das mit einer Transporteinrichtung 36 gekoppelt ist, die an einem Träger 38 angebracht ist. Der Träger 38 ist zusammen mit dem Messer 24 und der Transporteinrichtung 36 mittels eines Betätigungsorgans 34 zwischen einer in Fig. 1 in durchgezogenen Linien dargestellten Trennstellung und einer gestrichelt gezeichneten Wartestellung verschwenkbar, wie es durch einen Doppelpfeil in Fig. 1 angedeutet ist.The cutting device comprises a knife 24 which is connected to a transport device 36 is coupled, which is attached to a carrier 38. The Carrier 38 is together with the knife 24 and the transport device 36 by means of an actuator 34 between a solid in Fig. 1 Lines shown separating position and a dashed line Waiting position swiveling, as indicated by a double arrow is indicated in Fig. 1.

Aus Fig. 2 ist zu erkennen, daß die Transporteinrichtung 36 ein beispielsweise als Kette, Riemen oder Band ausgebildetes Endlosorgan 40 umfaßt, an dem das Messer 24 angebracht ist und das sich senkrecht zu der durch einen Pfeil B angedeuteten Bahnlaufrichtung, d.h. in Längsrichtung des neuen Wickelkerns 12 erstreckt, dessen Drehrichtung durch einen Pfeil C angedeutet ist.From Fig. 2 it can be seen that the transport device 36, for example comprises an endless member 40 designed as a chain, belt or band, to which the knife 24 is attached and which is perpendicular to the direction indicated by an arrow B, i.e. longitudinal of the new winding core 12 extends, the direction of rotation by a Arrow C is indicated.

Das Endlosorgan 40 ist durch zwei Umlenkrollen 42 gespannt. Eine der Umlenkrollen 42 ist mit einer nicht dargestellten Antriebsvorrichtung gekoppelt, um das Endlosorgan 40 und somit das Messer 24 umlaufen lassen zu können.The endless member 40 is tensioned by two deflection rollers 42. One of the Deflection rollers 42 is coupled to a drive device, not shown, let it circulate around the endless member 40 and thus the knife 24 to be able to.

Um mit der in den Fig. 1 und 2 gezeigten erfindungsgemäßen Wickelvorrichtung die Papierbahn 10 auf den neuen Wickelkern 12 aufzuwickeln, wird zunächst der Zustand gemäß Fig. 1 hergestellt. Dazu wird der neue Wickelkern 12 zwischen die Wickelwalze 18 und den von der Wickelwalze 18 weggefahrenen alten Wickelkern 14 gebracht.To with the winding device according to the invention shown in FIGS. 1 and 2 wind the paper web 10 onto the new winding core 12, the state shown in FIG. 1 is first established. This will be the new one Winding core 12 between the winding roller 18 and that of the winding roller 18 brought old winding core 14 brought.

Gleichzeitig oder im Anschluß daran wird mittels des Betätigungsorgans 34 der Träger 38 in die Trennstellung gemäß Fig. 1 geschwenkt, wobei sich das Messer 24 in der in Fig. 2 gestrichelt dargestellten Ruhestellung auf der von der Papierbahn 10 abgewandten Seite des Endlosorgans 40 befindet.At the same time or afterwards by means of the actuator 34 the carrier 38 is pivoted into the disconnected position according to FIG. 1, wherein the knife 24 in the rest position shown in dashed lines in FIG. 2 on the side of the endless member 40 facing away from the paper web 10 located.

Wenn der gewünschte Durchmesser der Wickelrolle 16 auf dem alten Wikkelkern 14 erreicht ist, wird das Endlosorgan 40 in Richtung eines Pfeils A in Bewegung gesetzt, wobei das Messer 24 aus seiner Ruhestellung heraus derart beschleunigt wird, daß es spätestens nach Umlaufen der in Fig. 2 linken Umlenkrolle 42 die gewünschte Geschwindigkeit erreicht hat. Die mit unverminderter Geschwindigkeit laufende Papierbahn 10 wird dann - beginnend an deren in Fig. 2 linkem Rand - durch das mit einer konstanten Geschwindigkeit, die bevorzugt 10 bis 40 m/s beträgt, laufende Messer 24 vollständig durchgetrennt.If the desired diameter of the winding roll 16 on the old winding core 14 is reached, the endless member 40 in the direction of an arrow A set in motion, the knife 24 out of its rest position is accelerated in such a way that it rotates at the latest after the circulation in FIG Left pulley 42 has reached the desired speed. The paper web 10 running at undiminished speed then - starting at the left edge in Fig. 2 - by the one constant speed, which is preferably 10 to 40 m / s, running Knife 24 completely severed.

Durch die Überlagerung der Bewegungen der Papierbahn 10 und des Messers 24 entsteht eine schräg zur Bahnlaufrichtung B verlaufende Schnittlinie 46, wobei der Winkel, den die Schnittlinie 46 mit der Bahnlaufrichtung B einschließt, von dem Verhältnis der Geschwindigkeiten des Messers 24 und der Papierbahn 10 abhängt.By superimposing the movements of the paper web 10 and the knife 24, a cutting line is formed which runs obliquely to the web running direction B. 46, the angle that the cutting line 46 with the web running direction B includes the ratio of the speeds of the knife 24 and the paper web 10 depends.

Die an der führenden Kante 10b des neuen Bahnanfangs 10a somit schräg zur Bahnlaufrichtung B geschnittene Papierbahn 10 wird anschließend gegebenenfalls unter Zuhilfenahme geeigneter Mittel auf dem neuen Wickelkern 12 aufgewickelt. Der neue Bahnanfang 10a kann dazu beispielsweise mittels Druckluft an den neuen Wickelkern 12 geblasen werden. Aufgrund des Durchtrennens der Papierbahn 10 hinter dem Spalt 20 ist bei der Anordnung gemäß den Fig. 1 und 2 der neue Wickelkern 12 am Ende des Trennvorgangs bereits bereichsweise von dem neuen Bahnanfang 10a umschlungen, wodurch das Aufwickeln des neuen Bahnanfangs 10a auf den neuen Wickelkern 12 erleichtert wird.That at the leading edge 10b of the new path start 10a Paper web 10 cut at an angle to web running direction B is then if necessary with the help of suitable means on the new winding core 12 wound. The new path start 10a can do this for example, blown onto the new winding core 12 by means of compressed air become. Due to the severing of the paper web 10 behind the gap 20 is the new winding core 12 in the arrangement according to FIGS. 1 and 2 at the end of the separation process, in some areas, from the new start of the path 10a wrapped around, causing the new web start to wind up 10a on the new winding core 12 is facilitated.

Anstelle des Messers 24 kann die Schneidvorrichtung auch mit einem anderen Schneidewerkzeug versehen sein, beispielsweise mit einer Düse zum Ausstoßen eines Wasserstrahls unter hohem Druck, einem Laser oder einem rotierenden gezahnten Schneiderad.Instead of the knife 24, the cutting device can also be used with another Cutting tool may be provided, for example with a nozzle for Ejecting a jet of water under high pressure, a laser or a rotating toothed cutting wheel.

Abweichend von der Ausführungsform gemäß Fig. 1 und 2 kann die Schneidvorrichtung auch schräg zur Bahnlaufrichtung B bewegt werden, wodurch - bei unveränderter Geschwindigkeit der Papierbahn 10 und des Messers 24 - der Winkel zwischen der Schnittlinie 46 und der Bahnlaufrichtung B kleiner, d.h. die Papierbahn 10 spitzer geschnitten wird.Deviating from the embodiment according to FIGS. 1 and 2, the Cutting device can also be moved obliquely to the web running direction B, whereby - with unchanged speed of the paper web 10 and the Knife 24 - the angle between the cutting line 46 and the web running direction B smaller, i.e. the paper web 10 is cut more pointedly.

Die Wickelvorrichtung in der Ausführungsform gemäß Fig. 3 unterscheidet sich von der vorstehend anhand der Fig. 1 und 2 beschriebenen Ausführung dadurch, daß zum Durchtrennen der Papierbahn 10 der neue Wickelkern 12 weiter in den Zwischenraum zwischen der Wickelrolle 16 und der Wickelwalze 18 derart hineinbewegt wird, daß die Drehachsen der Wickelkerne 12, 14 und der Wickelwalze 18 in der gleichen horizontalen Ebene liegen. Im Gegensatz zur Ausführungsform von Fig. 1 ist der neue Wickelkern 12 somit tiefer in die Papierbahn 10 eingetaucht, wobei die Papierbahn 10 den neuen Wickelkern 12 über einen Winkelbereich von beinahe 90° umschlingt.The winding device in the embodiment according to FIG. 3 differs differs from the embodiment described above with reference to FIGS. 1 and 2 in that the new one for severing the paper web 10 Winding core 12 further into the space between winding roll 16 and the winding roller 18 is moved in such a way that the axes of rotation of the Winding cores 12, 14 and the winding roller 18 in the same horizontal Level. In contrast to the embodiment of Fig. 1 is the new one Winding core 12 thus dipped deeper into the paper web 10, the Paper web 10 the new winding core 12 over an angular range of almost wraps around 90 °.

Anstelle eines umlaufenden Messers ist die Schneidvorrichtung mit einer umlaufenden Düse 26 versehen, über die ein Wasserstrahl unter hohem Druck in Richtung des neuen Wickelkerns 12 ausgestoßen werden kann, welcher in der Lage ist, die Papierbahn 10 zu durchtrennen. Die Düse 26 ist so ausgerichtet, daß ein derartiger Wasserstrahl näherungsweise in radialer Richtung auf den neuen Wickelkern 12 zielt.Instead of a rotating knife, the cutting device with a revolving nozzle 26 provided, through which a water jet under high Pressure can be ejected in the direction of the new winding core 12, which is able to cut the paper web 10. The nozzle 26 is aligned so that such a water jet approximately in radial Direction towards the new winding core 12 is aimed.

Grundsätzlich kann die Schneidvorrichtung auch mit anderen Mitteln zum Durchtrennen der Papierbahn 10 versehen sein, z. B. mit einer Laservorrichtung.In principle, the cutting device can also be done by other means be provided for severing the paper web 10, e.g. B. with a laser device.

Die Wickelkerne 12, 14 sind bevorzugt mit einem elastisch verformbaren Bezug aus Polyurethan oder einem anderen verschleißfesten Kunststoff versehen. Alternativ kann die Wickelwalze 18 einen derartigen nachgiebigen Bezug aufweisen, während die Wickelkerne 12, 14 mit einem aus Metall hergestelltem Bezug versehen sind.The winding cores 12, 14 are preferably of an elastically deformable type Cover made of polyurethane or another wear-resistant plastic Mistake. Alternatively, the winding roller 18 can be compliant Have reference, while the winding cores 12, 14 with a metal manufactured cover are provided.

Gemäß der in den Fig. 4 und 5 vereinfacht dargestellten Ausführungsform einer erfindungsgemäßen Wickelvorrichtung, bei der der neue Wickelkern 12 während des Durchtrennens der Papierbahn 10 bezüglich der Wickelwalze 18 und des alten Wickelkerns 14 wiederum in einer Position gemäß Fig. 1 angeordnet ist, umfaßt die Schneidvorrichtung zwei Messer 24', die jeweils senkrecht zu der in Fig. 5 durch den Pfeil B angedeuteten Bahnlaufrichtung in einander entgegengesetzten Richtungen bewegbar sind.According to the embodiment shown in simplified form in FIGS. 4 and 5 a winding device according to the invention, in which the new winding core 12 during the severing of the paper web 10 with respect to the winding roller 18 and the old winding core 14 in turn in a position according to Fig. 1 is arranged, the cutting device comprises two knives 24 ' in each case perpendicular to the web running direction indicated by the arrow B in FIG. 5 are movable in opposite directions.

Die in Fig. 5 nicht im einzelnen dargestellte Transporteinrichtung 36' umfaßt ein Endlosorgan, wie es in Verbindung mit den Fig. 1 und 2 erläutert worden ist und an dem die beiden Messer 24' angebracht sind.The transport device 36 'not shown in detail in FIG. 5 comprises an endless organ, as explained in connection with FIGS. 1 and 2 has been and on which the two knives 24 'are attached.

Die beiden Messer 24' sind in Bahnlaufrichtung B mit Abstand voneinander angeordnet und werden zum Durchtrennen der Papierbahn 10 jeweils bezüglich deren Querrichtung etwa mittig angesetzt. Um die Papierbahn 10 vollständig zu durchtrennen, werden die beiden Messer 24' vorbeschleunigt und in Abhängigkeit von ihrer eigenen Geschwindigkeit sowie von der Geschwindigkeit der Papierbahn 10 derart an der Papierbahn 10 angesetzt, daß sich die beiden entstehenden Schnittlinien 46' schneiden, wie es in Fig. 5 gezeigt ist.The two knives 24 'are at a distance from one another in the web running direction B. arranged and are each for cutting the paper web 10 with respect to their transverse direction, set in the middle. Around the paper web To completely cut through 10, the two knives 24 'are pre-accelerated and depending on their own speed as well on the speed of the paper web 10 on the paper web 10 assuming that the two resulting cutting lines 46 'intersect, as shown in Fig. 5.

Hierdurch ergibt sich ein spitz zulaufender neuer Bahnanfang 10'a, der gegebenenfalls unter Zuhilfenahme geeigneter Mittel, beispielsweise Druckluft, auf dem neuen Wickelkern 12 aufgewickelt wird.This results in a tapering new start 10'a, the where appropriate with the aid of suitable means, for example Compressed air, is wound on the new winding core 12.

Die Messer 24' können auch jeweils ausgehend von einem der Ränder der Papierbahn 10 senkrecht zur Bahnlaufrichtung B in Richtung der Mitte der Papierbahn 10 wiederum derart bewegt werden, daß sich die Schnittlinien schneiden. Hierbei würde sich ein V-artig oder schwalbenschwanzartig eingeschnittener neuer Bahnanfang ergeben.The knives 24 'can also each start from one of the edges of the Paper web 10 perpendicular to the web running direction B in the direction of the center the paper web 10 are in turn moved such that the cutting lines to cut. This would look like a V or dovetail incised new start of path.

Die Ausführungsform der erfindungsgemäßen Wickelvorrichtung gemäß den Fig. 6 und 7 unterscheidet sich von der Ausführungsform gemäß Fig. 1 dadurch, daß die ein Messer 24" umfassende Transporteinrichtung 36" eine Zylinder-Kolben-Einheit 28 umfaßt. Das Messer 24" ist mit einem Zylinder gekoppelt, der in einem sich senkrecht zur Bahnlaufrichtung B in einer zur Papierbahn 10 parallel verlaufenden Ebene erstreckenden Kolben hin- und herbewegbar ist.The embodiment of the winding device according to the invention 6 and 7 differs from the embodiment according to Fig. 1 in that the knife 24 "comprising transport device 36 "comprises a cylinder-piston unit 28. The knife 24" is with a Cylinder coupled in a perpendicular to the web running direction B in a piston extending parallel to the paper web 10 can be moved back and forth.

Grundsätzlich ist jede Kombination zwischen der konkreten Ausgestaltung der Schneidvorrichtung sowie der Anordnung des neuen Wickelkerns 12 bezüglich des alten Wickelkerns 14 und der Wickelwalze 18 möglich. Basically, every combination is between the specific design the cutting device and the arrangement of the new winding core 12 with respect to the old winding core 14 and the winding roller 18 possible.

Die Transporteinrichtung der Schneidvorrichtung kann auch einen auf einer Linearführung zwangsgeführten Schlitten umfassen, der zu Beginn des Trennvorgangs impulsartig beschleunigt und über die volle Breite der Papierbahn gewissermaßen geschossen wird.The transport device of the cutting device can also be one a linear guide include positively guided carriage, which at the beginning of the separation process accelerated impulsively and across the full width of the Paper web is shot to a certain extent.

Die Transporteinrichtung 36, 36', 36'' der Schneidvorrichtung sowie das Betätigungsorgan 34 können mit dem neuen Wickelkern 12 - z. B. über mittels des neuen Wickelkerns 12 mitgeführte Elemente - derart gekoppelt sein, daß sich die Schneidvorrichtung beim Einschwenken des neuen Wickelkerns 12 an die Wickelwalze 18 heran - unabhängig von der Position des neuen Wickelkerns 12 - stets in einer optimalen Position zum Durchtrennen der Papierbahn 10 befindet.The transport device 36, 36 ', 36' 'of the cutting device and the Actuator 34 can with the new winding core 12 - z. B. about elements carried by means of the new winding core 12 - coupled in this way be that the cutting device when swiveling the new Winding core 12 to the winding roller 18 - regardless of the position of the new winding core 12 - always in an optimal position for Cutting the paper web 10 is located.

Ein Vorteil der Erfindung besteht darin, daß die Einschwenkbewegung des neuen Wickelkerns 12 an die Wickelwalze 18 heran für das Durchtrennen der Papierbahn 10 nicht unterbrochen werden muß. An advantage of the invention is that the pivoting movement of the new winding core 12 to the winding roller 18 for cutting the paper web 10 does not have to be interrupted.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

1010
Materialbahn, PapierbahnMaterial web, paper web
10a, 10'a10a, 10'a
neuer Bahnanfangnew path start
10b10b
führende Kanteleading edge
1212
neuer Wickelkernnew winding core
1414
alter Wickelkernold winding core
1616
Wickelrollereel
1818
Wickelwalzewinding roller
20, 2120, 21
Spaltgap
24, 24', 24"24, 24 ', 24 "
Messerknife
2626
Düsejet
2828
Zylinder-Kolben-EinheitCylinder-piston unit
3232
Andrückwalzepressure roller
3434
Betätigungsorganactuator
36, 36', 36"36, 36 ', 36 "
Transporteinrichtungtransport means
3838
Trägercarrier
4040
Endlosorganendless organ
4242
Umlenkrollenguide rollers
4444
Wickelschlittenwinding carriage
46, 46'46, 46 '
Schnittliniencut lines
AA
Laufrichtung des MessersDirection of the knife
BB
Laufrichtung der Materialbahn bzw. PapierbahnDirection of travel of the material web or paper web
CC
Drehrichtung des neuen WickelkernsDirection of rotation of the new winding core

Claims (29)

  1. Method of severing a running web (10), in particular a paper web, in which the web is wound up successively on a plurality of cores (12, 14), in particular shells, and in each case winding is begun on a new core (12) when a wound reel (16) formed on a previous old core (14) has reached a predetermined diameter,
    the new core (12) being moved between a winding roll (18), in particular a carrier roll, and the old core (14), to which the web (10) is fed over the winding roll (18),
    the running web (10) being severed in the region between a nip (20) which is formed by the winding roll (18) and the new core (12) and the wound reel (16) formed on the old core (14),
    characterized in that the web (10) is severed completely by means of at least one cutting device, which is moved relative to the web (10) in a plane approximately parallel to the web (10).
  2. Method according to Claim 1, characterized in that the cutting device is preferably moved at least substantially at right angles to the running direction B of the web (10) in such a way that an oblique cut line (46) is produced.
  3. Method according to Claim 1, characterized in that the cutting device is moved obliquely with respect to the running direction B of the web (10), preferably with a parallel component opposed to the running direction B of the web (10).
  4. Method according to one of the preceding claims, characterized in that the cutting device is moved continuously over the entire width of the web (10).
  5. Method according to one of the preceding claims, characterized in that, during the severing of the web (10), the cutting device is moved at a preferably at least approximately constant speed of preferably about 10 to 40 m/s.
  6. Method according to one of the preceding claims, characterized in that the cutting device is accelerated before severing the web (10).
  7. Method according to one of the preceding claims, characterized in that the cutting device comprises at least one knife (24, 24', 24"), a rotating, preferably toothed cutting wheel, a laser or a nozzle (26) for discharging a water jet.
  8. Method according to one of the preceding claims, characterized in that at least two cutting devices are moved in mutually opposite directions at least approximately at right angles to the running direction B of the web (10) at a preferably at least approximately constant speed.
  9. Method according to Claim 8, characterized in that in order to sever the web (10), the cutting devices are in each case set at least approximately centrally with respect to the transverse direction, preferably at points on the web (10) which are spaced apart in the running direction B of the web (10).
  10. Method according to the precharacterizing clause of Claim 1, characterized in that the web (10) is severed completely by means of at least two cutting devices, which are preferably moved relative to the web (10) in a plane approximately parallel to the web (10).
  11. Method according to Claim 10, characterized in that each cutting device is constructed and/or used in accordance with one of Claims 2 to 9.
  12. Method according to one of the preceding claims, characterized in that the web (10) is severed in the region of a free running path on the new core (12) to the old core (14).
  13. Method according to one of Claims 1 to 11, characterized in that the web (10) is severed in a region contacting the new core (12).
  14. Method according to one of the preceding claims, characterized in that, while the web (10) is being severed, the axis of rotation of the new core (12) is located above a horizontal plane that contains the axis of rotation of the old core (14).
  15. Method according to one of claims 1 to 13, characterized in that, while the web (10) is being severed, the axis of rotation of the new core (12) is located substantially in a horizontal plane that contains the axis of rotation of the old core (14).
  16. Method according to one of the preceding claims, characterized in that, following the severing of the web (10), the new web start (10a, 10'a) is applied to the new core (12) in particular by blowing, moistening, glueing and/or providing adhesive strips.
  17. Method according to one of the preceding claims, characterized in that the speed of the web (10) is not reduced as the web (10) is severed.
  18. Method according to one of the preceding claims, characterized in that the new core (12) dips into the web (10) as it is introduced between the winding roll (18) and the old core (14).
  19. Device for implementing a method of severing a running web (10) according to one of the preceding claims on a machine for producing and/or winding up the web (10), comprising
    a plurality of cores (12, 14), in particular shells, onto which the web (10) can be wound successively,
    a winding roll (18), in particular a carrier roll, it being possible for a new core (12), onto which the web (10) is to be wound, to be brought between the winding roll (18) and an old core (14), onto which the web (10) has been wound,
    at least one cutting device for severing the running web (10) being provided, which acts in the region between a nip (20) which is formed by the winding roll (18) and the new core (12) and the wound reel (16) formed on the old core (14),
    characterized in that
    the cutting device is designed to sever the web (10) completely and can be moved relative to the web (10) in a plane approximately parallel to the web (10) in such a way that a continuous cut line (46, 46') running from one edge of the web (10) to its opposite edge can be produced in the web (10) by the movement of the cutting device.
  20. Device according to Claim 19, characterized in that the cutting device can be moved over the entire width of the web (10).
  21. Device according to Claim 19 or 20, characterized in that a transport device (36") belonging to the cutting device comprises at least one cylinder-piston unit (28) whose piston bears the cutting device at one end.
  22. Device according to Claim 19 or 20, characterized in that a transport device (36, 36') belonging to the cutting device comprises an endless member (40), preferably one like a chain or belt, which is placed around deflection rollers (42) and bears the cutting device on its outer side.
  23. Device according to one of Claims 19 to 22, characterized in that the cores (12, 14) are provided with an elastically deformable covering, in particular one produced from a wear-resistant plastic, preferably from polyurethane.
  24. Device according to one of Claims 19 to 22, characterized in that a covering of the cores (12, 14) is in each case produced from metal, and the covering of the winding roll (18) is elastically deformable, in particular produced from a wear-resistant plastic, preferably from polyurethane.
  25. Device according to one of Claims 19 to 24, characterized in that the cutting device comprises a nozzle (26) aimed at the new core (12) to discharge a water jet.
  26. Device according to one of Claims 19 to 25, characterized in that at least two cutting devices are provided, preferably spaced apart in the running direction B of the web (10), which can be moved in mutually opposite directions at least approximately at right angles to the running direction B of the web (10).
  27. Device according to Claim 19, characterized in that at least two cutting devices are provided, which can be moved relative to the web (10) in such a way that intersecting cut lines (46') can be produced in the web (10) by the movements of the cutting devices, together forming a continuous cut line running from one edge of the web (10) to its opposite edge.
  28. Device according to Claim 27, characterized in that each cutting device is constructed in accordance with one of Claims 20 to 26.
  29. Cutting device for severing a running web (10) for a device according to one of Claims 19 to 28.
EP99114472A 1998-10-22 1999-07-23 Method and device for severing a running web Expired - Lifetime EP0997417B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19848810 1998-10-22
DE19848810A DE19848810A1 (en) 1998-10-22 1998-10-22 Cutting continuous moving material sheet involves use of cutting unit which is movable relative to material sheet in plane substantially parallel to material sheet

Publications (2)

Publication Number Publication Date
EP0997417A1 EP0997417A1 (en) 2000-05-03
EP0997417B1 true EP0997417B1 (en) 2003-10-15

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP99114472A Expired - Lifetime EP0997417B1 (en) 1998-10-22 1999-07-23 Method and device for severing a running web

Country Status (3)

Country Link
EP (1) EP0997417B1 (en)
AT (1) ATE252045T1 (en)
DE (2) DE19848810A1 (en)

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DE102008000475A1 (en) 2008-02-29 2009-09-03 Voith Patent Gmbh Method for winding a moving material web and winding machine for carrying out the method
EP2100838A2 (en) 2008-03-14 2009-09-16 Voith Patent GmbH Method for coiling a continuous strip of material and coiling machine for carrying out the method
DE102008000671A1 (en) 2008-03-14 2009-09-17 Voith Patent Gmbh Method for winding running material web, particularly sheet of fibrous material, involves winding material web at multiple winding cores to winding roll
US11279582B2 (en) 2016-10-17 2022-03-22 Paprima Industries Inc. Process for turning up in a paper machine and paper manufacture

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CN1321869C (en) 2001-12-12 2007-06-20 沃伊斯造纸专利有限公司 Method for transferring a running web onto a winding core and device for implementing said method
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DE102008000475A1 (en) 2008-02-29 2009-09-03 Voith Patent Gmbh Method for winding a moving material web and winding machine for carrying out the method
EP2100838A2 (en) 2008-03-14 2009-09-16 Voith Patent GmbH Method for coiling a continuous strip of material and coiling machine for carrying out the method
DE102008000673A1 (en) 2008-03-14 2009-09-17 Voith Patent Gmbh Method for winding a moving material web and winding machine for carrying out the method
DE102008000671A1 (en) 2008-03-14 2009-09-17 Voith Patent Gmbh Method for winding running material web, particularly sheet of fibrous material, involves winding material web at multiple winding cores to winding roll
US11279582B2 (en) 2016-10-17 2022-03-22 Paprima Industries Inc. Process for turning up in a paper machine and paper manufacture

Also Published As

Publication number Publication date
ATE252045T1 (en) 2003-11-15
EP0997417A1 (en) 2000-05-03
DE59907360D1 (en) 2003-11-20
DE19848810A1 (en) 2000-04-27

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